Question

Identify which property matches each operation.

4(7+9)=4⋅7+4⋅9
4⋅7⋅9=7⋅9⋅4
8+11+20=20+11+8
7+12=12+7
6⋅3=3⋅6
Answers: comunicative property of addition.
comunication property of multipication.
associative property of addition.
associative property of multipication.
distributive property.

Answer 1

Comunicative property of addition -

8+11+20=20+11+8

7+12=12+7

Comunication property of multipication -

4⋅7⋅9=7⋅9⋅4

6⋅3=3⋅6

Associative property of addition(?) -

4(7+9)=4⋅7+4⋅9

(The way it is written is kinda confusing I think it might one of the other two.)

Explanation:

The commutative property of addition says that changing the order of addends does not change the sum.

The commutative property of multiplication says that changing the order of factors does not change the product.

The associative property of addition says that changing the grouping of addends does not change the sum.